//显示切换
let thisnode1 = document.querySelector("#compress");
let thisnode2 = document.querySelector("#uncompress");
document.querySelector("#switch").addEventListener("click", function () {
    let thisnode = document.querySelector("#compress");
    thisnode.parentNode.appendChild(thisnode2);
    thisnode.parentNode.removeChild(thisnode);
    thisnode2.style.display = "block";
})
document.querySelector("#unswitch").addEventListener("click", function () {
    let thisnode = document.querySelector("#uncompress");
    thisnode.parentNode.appendChild(thisnode1);
    thisnode.parentNode.removeChild(thisnode);
    thisnode1.style.display = "block";
})